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Old 20-07-2009   #31
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Re: "engine failure" warning & lack of power

Quote Originally Posted by nec View Post
and can you tell us what that code relates to and whether we have access to the full list somewhere
I was told this code relates to the DPF but "T" should be able to say exactly what it means, I don't think he'd have a full list of codes handy though.
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Old 20-07-2009   #32
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Re: "engine failure" warning & lack of power

P1xxx codes are manufacture specific
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Old 25-08-2009   #33
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Re: "engine failure" warning & lack of power

Hi ,
just joined the forum and it would appear I've joined the Doblo " Engine Failure " club I bought an 08 plate Doblo 120 Dynamic from my local dealer about 5 months ago. I've had LOADS of Fiat's from them and they have been great. Car now has 18k on the clock. Problem started about 6 weeks ago; " engine failure " light on, low power. it was first diagnosed that there was a fault with the clutch sensor which meant that the car couldn't regenerate as it thought the clutch was engaged. On the second time the sensor was replaced . third time, last week, light on no power, back to dealer. there was no indication what was wrong except the car was trying to regenerate and wouldn't. Reset and fine till ten minutes ago so it's back to the dealer tomorrow. I have been advised re the " give it a good blast " now and again and I have changed my driving style to hold the car in gear longer between changes. i'll update tomorrow when they will rest it and it will be fine but for how long..
to be continued....................

Alfie.
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Old 26-08-2009   #34
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Re: "engine failure" warning & lack of power

Quote Originally Posted by Alfie1 View Post
I have been advised re the " give it a good blast " now and again and I have changed my driving style to hold the car in gear longer between changes.
remember that the "good blast" needs to last for about 10 minutes, so holding the revs before changing gear won't help.
You need to be on a dual carriageway at a steady 60 to 70 mph for 8 to 10 minutes.

This is quite a long time at that speed, you would travel about 11 or 12 miles in that time.
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Old 26-08-2009   #35
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Re: "engine failure" warning & lack of power

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Old 27-08-2009   #36
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Re: "engine failure" warning & lack of power

I have had the same issue with my 06 plate 40k Doblo.

First attempt by the garage was to change a brake sensor that they said was preventing regeneration and then to perform a forced regeneration (it apparently actually had to be done twice to clear dpf).

A month or so later it happened again. Car went in yesterday and this time they tracked down a software upgrade issued by Fiat that is apparently supposed to make the regeneration process less likely to fail.

Will let you know how I get on!
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Old 27-08-2009   #37
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Re: "engine failure" warning & lack of power

Quote Originally Posted by RichDoblo120 View Post
remember that the "good blast" needs to last for about 10 minutes, so holding the revs before changing gear won't help.
You need to be on a dual carriageway at a steady 60 to 70 mph for 8 to 10 minutes.

This is quite a long time at that speed, you would travel about 11 or 12 miles in that time.
Thanks Rich,
My Doblo is at the dealers and they have asked to keep it a few days whilst they monitor whats happening with it. When I took it in they plugged it in and the blockage level was 106% ( strangely it can go up to 200% ) They took it for a run, plugged it in and it was then 17% so it had carried out a regeneration. They also told me that the last regeneration had been 800kms before which I worked out was when I was on the M6 on a long run. My problem seems to be that I travel about 6 miles to work and back and use the car in an urban environment whilst at work , so it may have to wait till the weekend when I am more likely to be doing a long journey and it obviously doesn't like to wait that long. If I knew that I had to do one longer journey every week and the car would take advantage of this and regenerate I could do this, but it still isn't ideal is it?
At this stage the dealer hasn't an answer but have said that they may end up calling in a Fiat tech from HQ. In the meantime I have a brand new 1.4 G Punto to drive around in.

I'll keep you posted.

Alfie.
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Old 27-08-2009   #38
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Re: "engine failure" warning & lack of power

Quote Originally Posted by davy3 View Post
I have had the same issue with my 06 plate 40k Doblo.

First attempt by the garage was to change a brake sensor that they said was preventing regeneration and then to perform a forced regeneration (it apparently actually had to be done twice to clear dpf).

A month or so later it happened again. Car went in yesterday and this time they tracked down a software upgrade issued by Fiat that is apparently supposed to make the regeneration process less likely to fail.

Will let you know how I get on!
Davy,

I feel we are in the same boat

Alfie
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Old 28-08-2009   #39
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Re: "engine failure" warning & lack of power

Alfie

Well, it worked for a day.......

Back in next week
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Old 27-10-2009   #40
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Re: "engine failure" warning & lack of power

Kipper 28 (& others) - how did you resolve this in the end? I'm at the stage you were at 2 months ago and would love to know how the story ended.

My story so far: 2006 Doblo 1.9 JTD 120. 100,000 miles. Went in to limp mode. Local garage & then Fiat dealer both tried to force regenerations but all attempts at forced regen failed. Both diagnosed the only cure was to replace the DPF.

I replaced the DPF with a unit from "Online Automotive" for 413 and a local garage fitted it for 115. 500 miles (of mainly high-speed motorway driving) later and the vehicle is back in limp mode, so I'm back to square one.

I have ordered a scanner from Ebay to reset the limp mode myself, so at least I can use the vehicle, but how do I solve it once and for all?

I now know from reading this forum (& in particular the post by NumanR on post 182180) that the fact that the DPF would not regenerate is a clue that the DPF is OK and that the problem lies elsewhere. So I've probably replaced the DPF for nothing.

Is there someone out there who really knows how to fix these DPF-related problems? Is there a mechanic somewhere who can do the job?

Ta
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Old 28-10-2009   #41
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Re: "engine failure" warning & lack of power

I'd be looking at injection rates first (I assume oil deg index has been reset along with oil change?)
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Old 31-10-2009   #42
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Re: "engine failure" warning & lack of power

Thanks T14086. Neither the oil degredation index nor the service indicator have been reset. The car was fully serviced (oil & oil/fuel/air filters) when I first got it 1,000 miles ago by the local garage on the Scottish Island I was working on at the time.

My ELM327 scanner (30 from Ebay) shows fault code P2002 - "Particulate Trap Efficiency Below Threshold". I cleared the fault code using Easy OBD software, but it came back on within 3 miles.

Reading through this forum I see that the following can prevent the DPF from regenerating:
1. EGR problem.
2. ECU software not upgraded to a version that makes regen less likely to fail.
3. Malfunctioning clutch sensor - car thinks the clutch is engaged so prevents regen.
4. Malfunctioning brake sensor - car thinks brakes are engaged.
5. A problem with injection rates.
6. Non reset of Oil Regeneration Index.

I don't have much faith in the local Fiat dealer. They charged 68 for their last misdiagnosis of "You must change the DPF", which I did at a cost of 530 and it made no difference whatsoever. I feel if I went back there the technicians would use trial and error over days or weeks until they stumbled upon the problem.

So, can anyone suggest a workshop anywhere between Hampshire & Glasgow staffed by experts with experience of solving Doblo DPF non-regeneration problems?
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Old 06-01-2010   #43
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Re: "engine failure" warning & lack of power

See the post immediately before this one regarding non-DPF regeneration in a 2006 1.9 JTD Doblo. After 2 weeks at the dealer the technician diagnosed that:
1. The No.3 injector was overfuelling.
2. Oil deposits were building up in the inlet manifold.
3. The turbo oil seals were worn.
4. The turbo boost sensor was blocked with carbon deposits
....all of which was causing the DPF to fill up and preventing regeneration.
The technician cleaned out the oil & carbon deposits and replaced the boost sensor at a total cost of 520. This solved the problem. The car drives like a rocket and the DPF regenerates no problems. However he warned that the problem would recur unless the Turbo was replaced (1,000) and possibly the Inlet manifold & timing belt too (900) + oil & filter change (100).

Hope other Doblo owners find this information useful. As for me, I have sold this Doblo on cheaply and have bought a 1.4 Petrol Doblo instead. In fact I don't think I'll ever buy a diesel car again. They are far too complicated nowadays. 19th century petrol-technology for me from now on.
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Old 06-01-2010   #44
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Re: "engine failure" warning & lack of power

Quote Originally Posted by Omaweneno View Post
.
The technician cleaned out the oil & carbon deposits and replaced the boost sensor at a total cost of 520. .
how much
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Old 06-01-2010   #45
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Re: "engine failure" warning & lack of power

Quote Originally Posted by T14086 View Post
how much
Yes, that's correct. 520. 405 of that was labour while the technician investigated/educated himself in the mysterious ways of DPF failure problems.
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